Re: [Stox] Stephen Farrell's IESG feedback on draft-ietf-stox-core
Stephen Farrell <stephen.farrell@cs.tcd.ie> Mon, 10 February 2014 22:20 UTC
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Date: Mon, 10 Feb 2014 22:20:34 +0000
From: Stephen Farrell <stephen.farrell@cs.tcd.ie>
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To: Peter Saint-Andre <stpeter@stpeter.im>, The IESG <iesg@ietf.org>
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Cc: stox@ietf.org
Subject: Re: [Stox] Stephen Farrell's IESG feedback on draft-ietf-stox-core
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Hi Peter, On 02/10/2014 06:24 PM, Peter Saint-Andre wrote: > ( + STOX WG since one of the issues might deserve broader discussion ) > > Hi Stephen, thanks for your review: > > https://datatracker.ietf.org/doc/draft-ietf-stox-core/ballot/ > > You wrote in part: > > - I wondered why you didn't just say that (D)TLS SHOULD > be used/supported between gateways. Given that all the > relevant bits of code are likely to support that, wouldn't > it be a good thing? > > Yes, that seems eminently reasonable. Just to be clear - the above is the only DISCUSS point. > > - Has anyone thought about confusability in the name > mappings? I expected to see a bit of text in the > security considerations but didn't see it. > > Confusion is always possible. :-) Were you thinking about confusable > characters from Unicode, or something else? Right. Maybe its all there already and I just didn't see if in the mapping stuff, or maybe not. I'm not sure. > > - It seems a shame to not be able to gateway when the To is > a sips URI at all but I understand that some loss of > security is inevitable for cases like this. Is there any > work planned for an update that would allow gatewaying for > such cases, e.g. if the 1st XMPP server is the one to which > the user is connected and the user is connected using > XMPP/TLS? > > Hmm. I cannot say that I am aware of planning for updates to provide > more secure gatewaying, although folks active in the STOX WG might be > thinking along those lines. > > Depending on the deployment architecture, I think there are cases where > it is *possible* to TLS-protect all the hops. For instance, if > sip.example.org has a direct server-to-server connection to > xmpp.example.com (no intermediate hops) and both organizations agree to > force the use of TLS for client connections (e.g., via SLA), then I > suppose that sip.example.com could honor 'sips' URIs when sending > traffic to xmpp.example.com. However, such an arrangement is rare enough > right now that I don't know if it is worth mentioning. Fair enough. I can see that detecting that you (probably) have all (D)TLS hops might be tricky and error prone. Cheers, S. > > Peter >
- [Stox] Stephen Farrell's IESG feedback on draft-i… Peter Saint-Andre
- Re: [Stox] Stephen Farrell's IESG feedback on dra… Stephen Farrell
- Re: [Stox] Stephen Farrell's IESG feedback on dra… Peter Saint-Andre
- Re: [Stox] Stephen Farrell's IESG feedback on dra… Peter Saint-Andre
- Re: [Stox] Stephen Farrell's IESG feedback on dra… Stephen Farrell
- Re: [Stox] Stephen Farrell's IESG feedback on dra… Peter Saint-Andre
- Re: [Stox] Stephen Farrell's IESG feedback on dra… Stephen Farrell
- Re: [Stox] Stephen Farrell's IESG feedback on dra… Peter Saint-Andre